title: Equalization for intracortical microstimulation artifact reduction.
abstract: We present a method for decreasing the duration of artifacts present during intra-cortical microstimulation (ICMS) recordings by using techniques developed for digital communications. We replace the traditional monophasic or biphasic current stimulation pulse with a patterned pulse stream produced by a Zero Forcing Equalizer (ZFE) filter after characterizing the artifact as a communications channel. The results find that using the ZFE stimulus has the potential to reduce artifact width by more than 70%. Considerations for the hardware implementation of the equalizer are presented.
authors.forename: Philip
authors.initials: P
authors.lastname: Chu
authors.forename: Rikky
authors.initials: R
authors.lastname: Muller
authors.forename: Aaron
authors.initials: A
authors.lastname: Koralek
authors.forename: Jose M
authors.initials: JM
authors.lastname: Carmena
authors.forename: Jan M
authors.initials: JM
authors.lastname: Rabaey
authors.forename: Simone
authors.initials: S
authors.lastname: Gambini
mesh_terms: D000818:Animals; D016477:Artifacts; D062207:Brain-Computer Interfaces; D046690:Deep Brain Stimulation; D006801:Humans; D008839:Microelectrodes; D051381:Rats